blob: 19332dd98e14ec5cdc5c90f157cb02edc1c0dbde (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_LLVM_C_HELPERS
#define __PERF_LLVM_C_HELPERS 1
/*
* Helpers to call into LLVM C++ code from C, for the parts that do not have
* C APIs.
*/
#include <linux/compiler.h>
#ifdef __cplusplus
extern "C" {
#endif
struct llvm_a2l_frame {
char* filename;
char* funcname;
unsigned int line;
};
/*
* Implement addr2line() using libLLVM. LLVM is a C++ API, and
* many of the linux/ headers cannot be included in a C++ compile unit,
* so we need to make a little bridge code here. llvm_addr2line() will
* convert the inline frame information from LLVM's internal structures
* and put them into a flat array given in inline_frames. The caller
* is then responsible for taking that array and convert it into perf's
* regular inline frame structures (which depend on e.g. struct list_head).
*
* If the address could not be resolved, or an error occurred (e.g. OOM),
* returns 0. Otherwise, returns the number of inline frames (which means 1
* if the address was not part of an inlined function). If unwind_inlines
* is set and the return code is nonzero, inline_frames will be set to
* a newly allocated array with that length. The caller is then responsible
* for freeing both the strings and the array itself.
*/
int llvm_addr2line(const char* dso_name,
u64 addr,
char** file,
unsigned int* line,
bool unwind_inlines,
struct llvm_a2l_frame** inline_frames);
#ifdef __cplusplus
}
#endif
#endif /* __PERF_LLVM_C_HELPERS */
|
